package com.itheima.jobs;

import com.itheima.constant.RedisConstant;
import com.itheima.utils.QiniuUtils;
import org.springframework.beans.factory.annotation.Autowired;
import redis.clients.jedis.JedisPool;

import java.util.Set;

public class ClearImgJob {
	@Autowired

	private JedisPool jedisPool;

	public void clearImg(){

		//根据Redis中保存的两个set集合进行差值计算，获得垃圾图片名称集合

		Set<String> set =

				jedisPool.getResource().sdiff(RedisConstant.SETMEAL_PIC_RESOURCES,

						RedisConstant.SETMEAL_PIC_DB_RESOURCES);

		if(set != null){

			for (String picName : set) {

				//删除七牛云服务器上的图片

				QiniuUtils.deleteFileFromQiniu(picName);

				//从Redis集合中删除图片名称

				jedisPool.getResource().

						srem(RedisConstant.SETMEAL_PIC_RESOURCES,picName);

			}

		}

	}
}
